DYFED-Powys Police is investigating two arsons that took place in the Gorslas area on Monday, November 5, 2018.
The first arson was on a black Peugeot 308 at around 7.30pm on Cross Hands Road.
In the second incident, a Ford Ecosport was set alight at around 8pm.
A 52-year-old man was arrested on suspicion of arson and then released under investigation.
As part of the investigation, officers would like to speak to the man in the CCTV image, who could have information that can help them with their enquiries.
If you think it is you in the image, or you recognise the person pictured, contact PC Iwan Lewis 703 by calling 101. Quote reference: DPP/0192/05/11/2018/02/C